CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) [Abstract]
Net income	$ 877		$ 5,960		$ 1,697		$ 6,882
Available-for-sale securities:
Gross unrealized holding gain (loss) arising in the period	8,290		(10,763)		9,730		(13,009)
Related income tax effect	(2,902)		3,767		(3,406)		4,553
Less: reclassification adjustment for net realized gains included in net income	(485)	[1]	(5,454)	[1]	(593)	[1]	(6,132)	[1]
Related income tax effect	170	[2]	1,909	[2]	208	[2]	2,146	[2]
Net effect on other comprehensive income (loss)	5,073		(10,541)		5,939		(12,442)
Derivative financial instrument:
Fair value adjustment to derivative financial instrument	0		0		0		141
Related income tax effect	0		0		0		(49)
Net effect on other comprehensive income (loss)	0		0		0		92
Total other comprehensive income (loss), net of tax	5,073		(10,541)		5,939		(12,350)
Total comprehensive income (loss)	$ 5,950		$ (4,581)		$ 7,636		$ (5,468)

[1] Realized gains on available-for-sale securities recognized in realized investment gains, net on the accompanying condensed consolidated statements of operations.

[2] Income tax effect on reclassification adjustment for net realized gains included in income tax expense on the accompanying condensed consolidated statements of operations.